Seal & Restraint Couplings

Fully Compliant With New Regulations

Dresser Pipeline Solutions offers a complete line of seal and restraining couplings and fittings validated to meet industry regulations and requirements for pipe pullout resistance.

Dresser Pipeline Solutions has completed all testing for the PHMSA Plastic Pipe Rule (CATEGORY 1), ensuring mechanical couplings remain fully compliant with new federal standards.

Style 90 Universal

Say ‘goodbye’ to special tools and procedures with Dresser Style 90 Universal couplings! With minimal training, you can make quick, consistent, and reliable joints on steel to steel, steel to PE, or PE to PE pipe connections – simply with a common pipe wrench!

Dresser Style 90 Couplings and Fittings are 100% compliant to DOT 192.281(e) / ASTM F1948 Category 1.

Style 700 POSI-Hold

Looking for seal & restraining connections you can use in any combination of steel and PE pipe?

The Style 700 Universal POSI-HOLD boltless hydraulic couplings & fittings for natural gas piping systems are exactly what you need – and they are 100% compliant to DOT 192.281(e) / ASTM F1948 CAT 1. Quick, easy installation, minimal excavation, permanent gas-tight joints, positive electrical conductivity, and a UNIVERSAL DESIGN. One product seamlessly joins steel to steel, steel to PE, or PE to PE!

This advanced pipe joining design and fully independent seal and restraining capabilities eliminate the need for expensive welding or heat fusion equipment. Easy means there is no need for specially trained field personnel. Save time, save resources, save money!

Style 711 Bolted Couplings

Dresser recently introduced a new-and-improved design of the Style 711 seal & restraining coupling product line. This new design meets all requirements of the Category 1 Code of Federal Regulations.

The combination of components on the compression end(s) of the Style 711 product design results in an air-tight pressure seal, while the metallic gripping mechanism locks the pipe against pull-out, providing a complete seal and restraining connection.

For Steel, PE and Cast-Iron Connections

  • Straight couplings, insulating and conductive
  • Reducing couplings, insulating and conductive
  • Flange Adapters
  • Line Caps

Style 90 Insulated Restraining

The time-proven Dresser Style 90 insulated restraining coupling was designed with strength, protection, and insulation in mind. This coupling is ideal when efficiency is necessary – making quick pipe joints when both positive restraint and electrical isolation are required.

The Style 90 joins steel to steel and steel to polyethylene pipes with quick and easy installation. The insulating coupling is easily assembled using only a common pipe wrench. The pipe ends can be stabbed without disassembling the coupling – there goes your risk of lost parts in the ditch!

Positive pipe restraint, electrical isolation, factory-applied coatings … and versatility!

Style 401/501 SEAL-PLUS Couplings & Fittings

The Dresser SEAL-PLUS compression coupling system covers small diameter PE pipe connections from 5/8 to 1-3/8 OD. Style 401 plastic couplings are ideal for PE to PE and PE to Copper service connections. The Style 501 metal products provide the ideal connection for those many transition points from metal pipe or piping components to PE service tubing.

The Style 501 family of products include Steel x PE reducing couplings, male adapters, ells, and service tees.

Style 502 Service Head Adapter

The Dresser Style 502 Service Head Adapter provides versatility as a regular Riser Adapter, a Male Adapter for PE renewal service, or a Service Head Adapter for Steel and PE Pipe service transitions. Style 502 adapters are shipped completely assembled and include the proper Dresser insert stiffener as specified by customer.